Package update and implemented new fixes for Rector findings

src/FactorGraphs/Variable.php

@@ -10,7 +10,7 @@ class Variable
 {
     private mixed $value;
 
-    public function __construct(private GaussianDistribution $prior)
+    public function __construct(private readonly GaussianDistribution $prior)
     {
         $this->resetToPrior();
     }

src/FactorGraphs/VariableFactory.php

@@ -6,7 +6,7 @@ namespace DNW\Skills\FactorGraphs;
 
 class VariableFactory
 {
-    public function __construct(private \Closure $varPriorInitializer)
+    public function __construct(private readonly \Closure $varPriorInitializer)
     {
     }